1 /*
2 * Copyright (c) 2007, Novell Inc.
3 *
4 * This program is licensed under the BSD license, read LICENSE.BSD
5 * for further information
6 */
7
8 /*
9 * util.h
10 *
11 */
12
13 #ifndef LIBSOLV_UTIL_H
14 #define LIBSOLV_UTIL_H
15
16 #include <stddef.h>
17 #include <string.h>
18
19 #ifdef __cplusplus
20 extern "C" {
21 #endif
22
23 /**
24 * malloc
25 * exits with error message on error
26 */
27 extern void *solv_malloc(size_t);
28 extern void *solv_malloc2(size_t, size_t);
29 extern void *solv_calloc(size_t, size_t);
30 extern void *solv_realloc(void *, size_t);
31 extern void *solv_realloc2(void *, size_t, size_t);
32 extern void *solv_free(void *);
33 extern char *solv_strdup(const char *);
34 extern void solv_oom(size_t, size_t);
35 extern unsigned int solv_timems(unsigned int subtract);
36 extern void solv_sort(void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *, void *), void *compard);
37 extern char *solv_dupjoin(const char *str1, const char *str2, const char *str3);
38 extern char *solv_dupappend(const char *str1, const char *str2, const char *str3);
39 extern int solv_hex2bin(const char **strp, unsigned char *buf, int bufl);
40 extern char *solv_bin2hex(const unsigned char *buf, int l, char *str);
41
42
solv_extend(void * buf,size_t len,size_t nmemb,size_t size,size_t block)43 static inline void *solv_extend(void *buf, size_t len, size_t nmemb, size_t size, size_t block)
44 {
45 if (nmemb == 1)
46 {
47 if ((len & block) == 0)
48 buf = solv_realloc2(buf, len + (1 + block), size);
49 }
50 else
51 {
52 if (((len - 1) | block) != ((len + nmemb - 1) | block))
53 buf = solv_realloc2(buf, (len + (nmemb + block)) & ~block, size);
54 }
55 return buf;
56 }
57
58 /**
59 * extend an array by reallocation and zero's the new section
60 * buf old pointer
61 * len current size
62 * nmbemb number of elements to add
63 * size size of each element
64 * block block size used to allocate the elements
65 */
solv_zextend(void * buf,size_t len,size_t nmemb,size_t size,size_t block)66 static inline void *solv_zextend(void *buf, size_t len, size_t nmemb, size_t size, size_t block)
67 {
68 buf = solv_extend(buf, len, nmemb, size, block);
69 memset((char *)buf + len * size, 0, nmemb * size);
70 return buf;
71 }
72
solv_extend_resize(void * buf,size_t len,size_t size,size_t block)73 static inline void *solv_extend_resize(void *buf, size_t len, size_t size, size_t block)
74 {
75 if (len)
76 buf = solv_realloc2(buf, (len + block) & ~block, size);
77 return buf;
78 }
79
solv_calloc_block(size_t len,size_t size,size_t block)80 static inline void *solv_calloc_block(size_t len, size_t size, size_t block)
81 {
82 void *buf;
83 if (!len)
84 return 0;
85 buf = solv_malloc2((len + block) & ~block, size);
86 memset(buf, 0, ((len + block) & ~block) * size);
87 return buf;
88 }
89
90 #ifdef __cplusplus
91 }
92 #endif
93
94 #endif /* LIBSOLV_UTIL_H */
95